A headless fastener externally threaded on both ends with each threaded portion of one but not necessarily the same nominal diameter. It is designed to be locked in place by either a ring, lock, serrated or a ring, lock, keyed.
NSN 5835-00-711-3371
NSN 5975-00-024-9013
NSN 7035-01-093-7216
NSN 5935-01-119-8418
NSN 5950-00-061-2456
NSN 6135-01-413-4747
NSN 5975-00-018-7143
NSN 6610-00-602-7240
NSN 6145-00-170-6872
NSN 6685-00-849-7975
NSN 5835-01-126-2480
NSN 5935-00-553-3423